Distal metastasis.: Usually carcinoid tumors cause more syndromal symptoms than just flushing in the late stage. (Diarrhea, weight loss, etc. should occur). 5-HIAA is a metabolite (breakdown product) of serotonin; but also of tryptophan (protein found in foods) - the levels are unreliable for diagnosis but OK as a screening tool. Chromogranin-A = confirmatory test. Use HealthTap Prime to discuss- this is complicated!
Answered 6/19/2017
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A doctor has provided 1 answer
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